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Allowance for credit losses for loans (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Commercial Real Estate Portfolio Segment [Member]    
Financing Receivable, Past Due [Line Items]    
Loans and Leases Receivable, Allowance $ 1,921 $ 1,811
[custom:LoansAndLeasesReceivableAllowanceAccountingAdoptionImpact-1] 2,447  
[custom:LoansAndLeasesReceivableAllowanceSubtotal-1] 4,368  
Allowance for Loan and Lease Losses, Period Increase (Decrease) (89) (173)
Allowance for Loan and Lease Losses, Writeoff (46)
Allowance for Loan and Lease Loss, Recovery of Bad Debts 1
Loans and Leases Receivable, Allowance 4,279 1,593
Commercial Portfolio Segment [Member]    
Financing Receivable, Past Due [Line Items]    
Loans and Leases Receivable, Allowance 8,425 6,973
[custom:LoansAndLeasesReceivableAllowanceAccountingAdoptionImpact-1] (3,236)  
[custom:LoansAndLeasesReceivableAllowanceSubtotal-1] 5,189  
Allowance for Loan and Lease Losses, Period Increase (Decrease) 705 261
Allowance for Loan and Lease Losses, Writeoff (334)
Allowance for Loan and Lease Loss, Recovery of Bad Debts
Loans and Leases Receivable, Allowance 5,894 6,900
Residential Portfolio Segment [Member]    
Financing Receivable, Past Due [Line Items]    
Loans and Leases Receivable, Allowance 4,108 3,020
[custom:LoansAndLeasesReceivableAllowanceAccountingAdoptionImpact-1] 831  
[custom:LoansAndLeasesReceivableAllowanceSubtotal-1] 4,939  
Allowance for Loan and Lease Losses, Period Increase (Decrease) 287 252
Allowance for Loan and Lease Losses, Writeoff (16)
Allowance for Loan and Lease Loss, Recovery of Bad Debts
Loans and Leases Receivable, Allowance 5,226 3,253
Consumer Portfolio Segment [Member]    
Financing Receivable, Past Due [Line Items]    
Loans and Leases Receivable, Allowance 392 277
[custom:LoansAndLeasesReceivableAllowanceAccountingAdoptionImpact-1] 229  
[custom:LoansAndLeasesReceivableAllowanceSubtotal-1] 621  
Allowance for Loan and Lease Losses, Period Increase (Decrease) 21 37
Allowance for Loan and Lease Losses, Writeoff (35) (17)
Allowance for Loan and Lease Loss, Recovery of Bad Debts 3 5
Loans and Leases Receivable, Allowance 610 302
Finance Leases Portfolio Total Segment [Member]    
Financing Receivable, Past Due [Line Items]    
Loans and Leases Receivable, Allowance 14,846 12,962
[custom:LoansAndLeasesReceivableAllowanceAccountingAdoptionImpact-1] 271  
[custom:LoansAndLeasesReceivableAllowanceSubtotal-1] 15,117  
Allowance for Loan and Lease Losses, Period Increase (Decrease) 924 363
Allowance for Loan and Lease Losses, Writeoff (35) (416)
Allowance for Loan and Lease Loss, Recovery of Bad Debts 3 6
Loans and Leases Receivable, Allowance $ 16,009 12,915
Unallocated Financing Receivables [Member]    
Financing Receivable, Past Due [Line Items]    
Loans and Leases Receivable, Allowance   881
Allowance for Loan and Lease Losses, Period Increase (Decrease)   (14)
Allowance for Loan and Lease Losses, Writeoff  
Allowance for Loan and Lease Loss, Recovery of Bad Debts  
Loans and Leases Receivable, Allowance   $ 867